A&P I: Chapter 15

Front

The autonomic nervous system carries out many somatic reflexes that are crucial to homeostasis.

Back

False

Front

The autonomic nervous system is composed of ganglia in the central nervous system and ganglia in the periphery

Back

false

Front

Most autonomic efferent pathways involve one neuron.

Back

false

Front

The autonomic nervous system controls all of the following except the...

Back

skeletal muscle in the rectus abdominis

Front

The effect of autonomic fibers on target cells is_________. The effect of somatic fibers on target cells is_________.

Back

excitatory or inhibitory; always excitatory

Front

In response to high blood pressure, stretch receptors called _________ in the walls of arteries carrying blood to the head, will trigger a reflex that causes the heart to _________ its beats per minute.

Back

baroreceptors; decrease

Front

The motor pathway of the autonomic nervous system usually involves_________ neurons.

Back

two

Front

Preganglionic axons of the autonomic efferent pathway are _________ and secrete _________.

Back

myelinated; acetylcholine (ACh)

Front

Which of the following is NOT a reason that somatic reflexes act faster than visceral reflexes?

Back

The effector organs in the somatic reflex are closer to the spinal cord.

Front

Under normal circumstances, both divisions of the autonomic nervous system are active simultaneously.

Back

true